feat(design): add design scheme support and UI improvements

- Implement design scheme system with palette, typography, and feature customization
- Add color scheme dialog for user customization
- Update chat UI components to use design scheme values
- Improve header actions with consolidated deploy and export buttons
- Adjust layout spacing and styling across multiple components (chat, workbench etc...)
- Add model and provider info to chat messages
- Refactor workbench and sidebar components for better responsiveness

app/lib/common/prompt-library.ts

@@ -1,11 +1,13 @@
 import { getSystemPrompt } from './prompts/prompts';
 import optimized from './prompts/optimized';
 import { getFineTunedPrompt } from './prompts/new-prompt';
+import type { DesignScheme } from '~/types/design-scheme';
 
 export interface PromptOptions {
   cwd: string;
   allowedHtmlElements: string[];
   modificationTagName: string;
+  designScheme?: DesignScheme;
   supabase?: {
     isConnected: boolean;
     hasSelectedProject: boolean;
@@ -28,12 +30,12 @@ export class PromptLibrary {
     default: {
       label: 'Default Prompt',
       description: 'This is the battle tested default system Prompt',
-      get: (options) => getSystemPrompt(options.cwd, options.supabase),
+      get: (options) => getSystemPrompt(options.cwd, options.supabase, options.designScheme),
     },
     enhanced: {
       label: 'Fine Tuned Prompt',
       description: 'An fine tuned prompt for better results',
-      get: (options) => getFineTunedPrompt(options.cwd, options.supabase),
+      get: (options) => getFineTunedPrompt(options.cwd, options.supabase, options.designScheme),
     },
     optimized: {
       label: 'Optimized Prompt (experimental)',